Displaying publications 521 - 540 of 1500 in total

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  1. Azian AA, Nurulazman AA, Shuaib L, Mahayidin M, Ariff AR, Naing NN, et al.
    Acta Neurochir (Wien), 2001;143(7):711-20.
    PMID: 11534693
    Head injury is a significant economic, social and medical problem all over the world. Road accidents are the most frequent cause of head injury in Malaysia with highest risk in the young (15 to 24 years old). The associated outcomes include good recovery, possibility of death for the severely injured, which may cause disruption of the lives of their family members. It is important to predict the outcome as it will provide sound information to assist clinicians in Malaysia in providing prognostic information to patients and their families, to assess the effectiveness of different modes of treatment in promoting recovery and to document the significance of head injury as a public health problem.

    RESULTS: A total of 103 cases with intracranial haemorrhage i.e. intracerebral haemorrhage, extradural haemorrhage, subdural haemorrhage, intraventricular haemorrhage, haemorrhagic contusion and subarachnoid haemorrhage, following motor vehicle accidents was undertaken to study factors contributing to either good or poor outcome according to the Glasgow Outcome Scale. Patients below 12 years of age were excluded. The end point of the study was taken at 24 months post injury. The selected variables were incorporated into models generated by logistic regression techniques of multivariate analysis to see the significant predictors of outcome as well as the correlation between the CT findings with GCS.

    CONCLUSION: Significant predictors of outcome were GCS on arrival in the accident emergency department, pupillary reflex and the CT scan findings. The CT predictors of outcome include ICH, EDH, IVH, present of SAH, site of ICH, volumes of EDH and SDH as well as midline shift.

    Matched MeSH terms: Tomography, X-Ray Computed*
  2. Samad SA, Maimunah A, Zulfiqar A, Zaharah M
    Med J Malaysia, 1995 Mar;50(1):82-6.
    PMID: 7752982
    The sonographic and CT appearances of 9 large cavernous hemangiomas of the liver were studied. On sonography, 6 masses (67%) exhibit heterogenous echo pattern; where in 2 patients the echotexture was a mixture of hypoechoic and isoechoic areas and in 4 patients there are varying amounts of bright hyperreflective areas similar to the texture typical of small hemangiomas. The masses were predominantly hypoechoic in the remaining 3 patients (33%). Incremental bolus or bolus-infusion dynamic CT showed peripheral contrast enhancement of varying intensities and thickness in all patients. The lesions were incorrectly diagnosed as hepatomas in 4 patients, suspected as hemangiomas with a differential diagnosis of hepatomas in 4 patients and an early liver abscess in 1 patient. It is concluded that large cavernous hemangiomas of the liver do not exhibit the typical homogenous hyperreflective echotexture as exhibited by small lesions and they mimic primary and secondary hepatic neoplasms. However, the diagnosis of hemangioma should be entertained when such a mass contains bright hyperechoic areas within its heterogenous echo pattern and exhibit peripheral enhancement on contrast enhanced CT. In addition to correlation with appropriate clinical information, confirmation of diagnosis include delayed scanning during a routine incremental bolus dynamic CT, single-slice dynamic contrast enhanced CT, angiography or isotope scintigraphy and magnetic resonance imaging depending on the availability of facility.
    Matched MeSH terms: Tomography, X-Ray Computed*
  3. Segasothy M, Abdul Samad S, Zulfiqar A, Shaariah W, Morad Z, Prasad Menon S
    Nephron, 1994;66(1):62-6.
    PMID: 8107955
    Computed tomography (CT) and ultrasonography (US) were performed in 40 patients who had consumed excessive quantities of analgesics (> 1 kg) to compare their value in the diagnosis of analgesic nephropathy (AN). The computed tomography and sonographic features were renal papillary calcifications. Renal papillary necrosis (RPN) was documented in 20 of 40 patients by US and in 14 of 40 patients by CT. In 11 patients, both US and CT were positive. In 9 patients, US was positive whilst CT was negative. In 3 patients, CT was positive whilst US was negative. Prevalence of RPN was 50% using US and 35% using CT. Using US as a gold standard, sensitivity of CT was 55%, specificity 85%, positive predictive value 78.6% and negative predictive value 34.6%. Percent agreement with CT and US was 70%. Cohen's kappa statistic adjusting for chance agreement was 40%. Based on these results, it is found that US yielded a higher percentage of positive cases of RPN.
    Matched MeSH terms: Tomography, X-Ray Computed/statistics & numerical data
  4. Tan CT, Abdullah D, Zakariya AH
    Neuroradiology, 1991;33(6):494-8.
    PMID: 1780049
    A study of 12 patients with clinically definite multiple sclerosis (CDMS) using high dose infusion CT showed overall abnormality of 75% with an average of 2.5 lesions per patient. 75% of the patients showed abnormality of the cerebrum, mostly asymptomatic. The main changes were ventricular dilatation and asymmetry, isolated or generalized cerebral atrophy, areas of low attenuation mainly in the deeper parts of the cerebrum and the peri-ventricular area. 25% of the patients showed changes in the brainstem and none was seen in the cerebellum. The abnormality was more florid in patients with clinically disseminated forms of the disease. The study demonstrated that asymptomatic cerebral involvement is common among Asian patients with MS and CT is a useful tool in the overall assessment and diagnosis of Asian MS patients.
    Matched MeSH terms: Tomography, X-Ray Computed*
  5. Chee CP, Habib ZA
    Neuroradiology, 1991;33(2):152-4.
    PMID: 2046901
    Between January 1982 and December 1989, 12 patients with 13 acute extradural haematomas as a result of injury involving the venous sinuses were treated by the first author. The CT scan appearances in 6 cases were remarkable in that there were large bubbles of low density in the hyperdense haematomas and liquid blood was found during the operation. The possible underlying pathophysiological changes that gave rise to this appearance are discussed. The CT scan appearance and the proximity of the clot to the venous sinuses should alert the neurosurgeon to the high probabilities of venous sinus tear such that proper treatment can be offered.
    Matched MeSH terms: Tomography, X-Ray Computed*
  6. Sivanesaratnam V, Singh J
    Med J Malaysia, 1985 Dec;40(4):317-20.
    PMID: 3842732
    22 patients with proven hydatidiform molar pregnancy were subjected to whole lung tomography. By this technique, lung metastases were detected in four patients when plain chest radiographs had shown no secondaries. In a fifth patient additional nodules not observed on the plain radiographs were seen. The usefulness of this procedure as an adjunct to existing methods of following up of patients with metastatic trophoblastic disease is discussed.
    Matched MeSH terms: Tomography, X-Ray*
  7. Majid AA, Yii NW
    Chest, 1991 Aug;100(2):560-1.
    PMID: 1864139
    Pulmonary zygomycosis rarely occurs in the absence of underlying disease. We report a patient with granulomatous pulmonary zygomycosis without underlying disease who presented with a pulmonary mass. We present the computed tomographic findings that we believe have not been described previously. We also report the successful treatment by pneumonectomy.
    Matched MeSH terms: Tomography, X-Ray Computed*
  8. Leong CF, Cheong SK, Ng P, Amran AR
    Hosp Med, 2003 Nov;64(11):686-7.
    PMID: 14671884
    Matched MeSH terms: Tomography, X-Ray Computed/methods
  9. Wastie ML
    Br J Radiol, 1972 Aug;45(536):570-4.
    PMID: 5045966
    Matched MeSH terms: Tomography*
  10. Ng GYH, Nah SA, Teoh OH, Ong LY
    Pediatr Surg Int, 2020 Mar;36(3):383-389.
    PMID: 31993738 DOI: 10.1007/s00383-020-04619-x
    BACKGROUND: The risk factors for recurrence in primary spontaneous pneumothorax (PSP) in children are not well known. We aimed to identify possible risk factors, and to evaluate the utility of computerised tomography (CT) scans in predicting future episodes.

    METHODS: We reviewed children aged 

    Matched MeSH terms: Tomography, X-Ray Computed/methods*
  11. Abdullah B, Vengathajalam S, Md Daud MK, Wan Mohammad Z, Hamizan A, Husain S
    J Asthma Allergy, 2020;13:523-531.
    PMID: 33149624 DOI: 10.2147/JAA.S275536
    Purpose: The allergic phenotype of chronic rhinosinusitis (CRS) and central compartment atopic disease (CCAD) have been described. The CCAD is a radiological phenotype in patients with CRS that presents as a central mucosal disease due to allergy. The subset of patients having chronic rhinosinusitis with nasal polyps (CRSwNP) has not been well characterized. We aim to describe the clinical and radiological characterizations of patients presenting with the allergic phenotype of CRSwNP.

    Patients and Methods: A cross-sectional study at a tertiary hospital was performed. Adult patients diagnosed with CRSwNP who had both allergology and radiological assessments were enrolled. The symptoms of allergic rhinitis, Lund-Kennedy (LK) endoscopic scoring, Lund-Mackay (LM) computed tomography scan of paranasal sinuses (CTPNS) scoring, CCAD features, skin prick test (SPT) and level of specific IgE were assessed. All the patients underwent SPT for house dust mites.

    Results: A total of 38 patients were enrolled. Symptoms, endoscopic and CTPNS scores were higher in the allergy and CCAD groups compared to the nonallergy and nonCCAD groups. The symptom of "need to blow nose" was statistically significant in allergy vs nonallergy (p=0.01) and CCAD vs nonCCAD (p=0.02). There were significant differences in the endoscopic scores in both allergy and CCAD (allergy vs nonallergy, p=0.01; CCAD vs nonCCAD, p=0.03), and CT scores in both allergy and CCAD (allergy vs nonallergy, p=0.02; CCAD vs nonCCAD, p=0.02). All patients with CCAD have worse scoring than nonCCAD (LK score, p=0.03; LM score, p=0.02). Patients with allergy have more polypoidal involvement of the middle turbinates (left middle turbinate, p=0.141; right middle turbinate, p=0.074) and CCAD (left middle turbinate, p=0.017; right middle turbinate, p=0.009) than nonallergy and nonCCAD patients.

    Conclusion: Allergic phenotype of CRSwNP has a worse clinical and radiological disease burden. Optimal treatment of allergy is essential for a better outcome.

    Matched MeSH terms: Tomography; Tomography, X-Ray Computed
  12. Ong TK
    Eur Endod J, 2017;2(1):1-6.
    PMID: 33403352 DOI: 10.14744/eej.2017.17035
    Objective: The purpose of this article was to report the finding of the disappearance of intracanal medication as a supporting evidence of vertical root fracture (VRF) through non-surgical intervention.

    Methods: A retrospective review of the dental records of patients seen by an endodontist in a private endodontic office from September 2013 to September 2016 was conducted by the same endodontist. Cases that met the inclusion and exclusion criteria were assigned as the subjects of this study, and data were extracted from their clinical and radiographic records. Patient's demographic features, pre-operative signs and symptoms, details of rendered clinical procedures, follow-up visits, clinical and radiographic findings were recorded. Seventeen teeth for which non-surgical exploratory re-treatment was initiated were included in this study. Calcium hydroxide-based intracanal medication was placed for 2-4 weeks. Obturation of the root canals was performed if the tooth showed improvement of clinical signs and symptoms. If not, a cone-beam computed tomography (CBCT) scan was proposed to the patient to rule out VRF.

    Results: After the non-surgical re-treatment was initiated, 13 teeth showed improvement of clinical symptoms and the re-treatment was therefore completed. The remaining 4 teeth presented with unresolved clinical presentations (deep pocket, presence of sinus tract and/or tender to percussion and palpation). Four teeth showed partial disappearance of intracanal medication where VRF was confirmed using CBCT in 3 teeth and with a conventional periapical (PA) radiograph in 1 tooth.

    Conclusion: The disappearance of intracanal medication during non-surgical intervention was often associated with VRF. Thus, this feature may serve as an aid in diagnosing VRF.

    Matched MeSH terms: Cone-Beam Computed Tomography; Spiral Cone-Beam Computed Tomography
  13. Wong L, Kanthasamy SV, Durairaj G, Thangaratnam RR
    Int J Surg Case Rep, 2020;77:48-52.
    PMID: 33137672 DOI: 10.1016/j.ijscr.2020.10.091
    INTRODUCTION: Intussusception usually occurs in the paediatric population. When it occurs in the adult population, it is normally caused by a malignant intraluminal pathology.

    PRESENTATION OF CASE: A 72-year-old female presented to us with right-sided abdominal pain for 3 weeks, associated with vomiting and diarrhoea. She had an appendectomy done 30 years ago and a recent myocardial infarction. Abdominal examination revealed a previous appendectomy scar and tenderness over the right lumbar region. Computed tomography showed ileocaecal intussusception. Right hemicolectomy with a double barrel stoma was performed as she was unstable intraoperatively. Histopathological examination of the tumour showed a well-differentiated neuroendocrine tumour. Subsequent PET scan showed no systemic disease and a reversal of the stoma was done. She remained disease free for a year.

    DISCUSSION: Our patient had undergone a right hemicolectomy despite the high risk of mortality, as there is a high chance of malignancy. Double barrel stoma was done, as she was unstable intraoperatively. Fortunately, she recovered well and had her stoma reversed without any further recurrence of her disease.

    CONCLUSION: Adult patients who present with intussusception should be managed with resection, as there is a high possibility of a malignancy. Early resection should be planned to prevent further spread of the tumour.

    Matched MeSH terms: Tomography; Positron-Emission Tomography
  14. Tagiling N, Mohd-Rohani MF, Wan-Sohaimi WF, Faisham WI, Nawi NM
    Malays Orthop J, 2020 Nov;14(3):188-193.
    PMID: 33403085 DOI: 10.5704/MOJ.2011.032
    Megaprosthesis is used to restore the form and function of massive skeletal defects, but it is accompanied by risks of failure, mainly due to perimegaprosthetic infection (PMI). In practice, the diagnosis of infected megaprosthesis among patients with a high index of clinical suspicion, elevated serological markers, and multiple negative or inconclusive imaging can be very challenging and poses a diagnostic conundrum to many orthopaedic surgeons. We present the case of a symptomatic 26-year-old female with large B-cell lymphoma who developed cellulitis with suspected complication of PMI 15 months post-implantation. The combination of advanced nuclear medicine imaging strategies, i.e., 99mTc-besilesomab/99mTc-sulfur colloid scintigraphy with hybrid single-photon emission computed tomography/computed tomography (SPECT/CT) scanning helps to characterise and delineate both infections. Invasive procedures such as joint aspiration and biopsy were avoided, and the patient was successfully treated with antibiotics. Hence, we report a case where advanced imaging modalities were decisive in the investigation of PMI.
    Matched MeSH terms: Single Photon Emission Computed Tomography Computed Tomography
  15. Elhence A, Gahlot N, Gupta A, Garg P
    Malays Orthop J, 2020 Nov;14(3):180-183.
    PMID: 33403083 DOI: 10.5704/MOJ.2011.030
    Arterial haemorrhage is a potentially life threatening complication in severe pelvic ring injuries such as "open book" fractures. These injuries mostly implicate the posterior branches of the internal iliac artery. However, we report an unusual case wherein the source of bleeding was identified to be the internal pudendal artery and its branches. Patient was a 27-year-old male who presented to the emergency following an alleged history of road traffic accident and was diagnosed as a case of pelvic fracture (Young and Burgess Antero-Posterior Compression II) with sacral fracture (Denis type 2) with suspected urethral injury. Computerised Tomography (CT) angiogram revealed contrast extravasation from the right internal pudendal artery. However, digital subtraction angiography (DSA) was normal indicating spontaneous closure of the arterial bleeder. Surgical stabilisation of the fracture was carried out and subsequently, patient was discharged. This report serves to highlight that although uncommon, internal pudendal artery can be injured in hemodynamically unstable "open book" pelvic fractures and hence, must be always ruled out.
    Matched MeSH terms: Tomography; Tomography, X-Ray Computed
  16. Wan JL, Lam YF, Foong KW, Abdul Ghani N, Lachmanan K
    Respirol Case Rep, 2020 Apr;8(3):e00547.
    PMID: 32166036 DOI: 10.1002/rcr2.547
    Primary pleural synovial sarcoma (PPSS) is an extremely rare malignancy without a known cause. The diagnosis is made after excluding metastasis from an extra-thoracic sarcoma. We report a case of a 67-year-old gentleman who presented with an incidental finding of a left lung mass on a routine chest X-ray. A computed tomography (CT) of the thorax and whole-body positron emission tomography (PET)-CT was done confirming a left lung mass with no other extra-thoracic involvement. A lobectomy was performed with a diagnostic and therapeutic intent. The histopathological examination and immunohistochemistry study revealed a pleural-based tumour with features suggestive of synovial sarcoma. Subsequently, he underwent post-operative radiotherapy. However, three months later, he developed an endobronchial recurrence, complicated by post-obstructive pneumonia resulting in his demise. This case highlights a rare form of malignancy with a rare site of recurrence.
    Matched MeSH terms: Tomography, X-Ray Computed; Positron-Emission Tomography
  17. Teng TS, Ishak NL, Subha ST, Bakar SA
    EXCLI J, 2019;18:223-228.
    PMID: 31217785 DOI: 10.17179/excli2018-1971
    CSF leak in penetrating skull base injury is relatively rare compared to close head injury involving skull base fracture. We report a 5-year-old boy presented with epistaxis and impacted pencil into the left nostril. The child was hemodynamically stable without any neurological deficit. Intraoperatively, there was a nasal septal defect posteriorly with anterior skull base fracture associated with CSF leak. The pencil was removed from the left nostril and the CSF leak was repaired using harvested abdominal fat under the same setting. Computed Tomography (CT) of the brain showed right cribriform plate fracture with small pneumocranium. Postoperatively, a prophylactic antibiotic was given for seven days and he was discharged well. Subsequent clinic visits up to one-year postoperative period showed no recurrence of the CSF leak. History taking, physical examination and CT imaging give valuable diagnostic values in managing the penetrating skull base injury. Early intervention for removal of the foreign body and repair of the CSF leak is advocated to prevent catastrophic complication.
    Matched MeSH terms: Tomography; Tomography, X-Ray Computed
  18. Tan TH, Boey CY, Lee BN
    Nucl Med Mol Imaging, 2018 Apr;52(2):119-124.
    PMID: 29662560 DOI: 10.1007/s13139-017-0496-3
    Purpose: The National Cancer Institute is the only referral centre in Malaysia that provides 68Ga-DOTA-peptide imaging. The purpose of this study is to determine the impact of 68Ga-DOTA-peptide PET/CT on the management of gastrointestinal neuroendocrine tumours (GI-NET).

    Materials and Methods: A cross-sectional study was performed to review the impact of 68Ga-DOTA-peptide (68Ga-DOTATATE or 68Ga-DOTATOC) PET/CT on patients with biopsy-proven GI-NET between January 2011 and December 2015. Suspected NET was excluded. Demographic data, tumoral characteristics, change of disease stage, pre-PET intended management and post-PET management were evaluated.

    Results: Over a 5-year period, 82 studies of 68Ga-DOTA-peptide PET/CT were performed on 44 GI-NET patients. The most common primary site was the rectum (50.0%) followed by the small bowel, stomach and colon. Using WHO 2010 grading, 40.9% of patients had low-grade (G1) tumour, 22.7% intermediate (G2) and 4.5% high (G3). Of ten patients scheduled for pre-operative staging, 68Ga-DOTA-peptide PET/CT only led to therapeutic change in three patients. Furthermore, false-negative results of 68Ga-DOTA-peptide PET/CT were reported in one patient after surgical confirmation. However, therapeutic changes were seen in 20/36 patients (55.6%) scheduled for post-surgical restaging or assessment of somatostatin analogue (SSA) eligibility. When 68Ga-DOTA-peptide PET/CT was used for monitoring disease progress during systemic treatment (sandostatin, chemotherapy, everolimus and PRRT) in metastatic disease, impact on management modification was seen in 19/36 patients (52.8%), of which 84.2% had inter-modality change (switch to everolimus, chemotherapy or PRRT) and 15.8% had intra-modality change (increased SSA dosage).

    Conclusions: 68Ga-DOTA-peptide PET/CT has a significant impact on management decisions in GI-NET patients as it can provide additional information on occult metastasis/equivocal lesions and supply the clinician an opportunity to select patients for targeted therapy.

    Matched MeSH terms: Positron Emission Tomography Computed Tomography
  19. Ghani Siti-Ilyana, Koh, Yi-Ni, Embong Zunaina
    MyJurnal
    Toxoplasmic optic neuropathy is rare and usually occurs monoocularly. This case report demonstrates a rare presentation of bilateral
    juxtapapillary retinochoroiditis (Jensen disease) due to toxoplasma infection in
    a young healthy patient. A 20-year-old lady presented with bilateral painless
    blurring of central vision for 5 days duration. It was preceded by fever, upper
    respiratory tract symptoms and headache. There was no history of contact or
    being scratched by a cat. Visual acuity was counting fingers for the right eye
    and 6/45 for the left eye. There was presence of relative afferent pupillary
    defect in the right eye. Optic nerve functions were impaired bilaterally which
    was severe in the right eye. Both eyes showed the presence of mild anterior
    segment inflammation and vitritis. Fundus examination revealed juxtapapillary
    retinochoroiditis bilaterally with swollen optic disc. Optical coherence
    tomography (OCT) showed presence of intra-retinal and sub-retinal fluid at
    macular area bilaterally. Serology for anti-toxoplasma Immunoglobulin G (IgG)
    was positive with titre of 1450 IU/ml. Computed tomography scan (CT scan) of
    brain and orbit was normal. A diagnosis of bilateral juxtapapillary
    retinochoroiditis or Jensen disease was made. Oral azithromycin 500 mg daily
    and guttae prednisolone 4 hourly for 6 weeks was commenced. Oral
    prednisolone 50 mg daily (1 mg/kg/day) was added after completion of 1 week
    of antibiotic and was tapered down within 5 weeks. There was improvement of
    vision as early as 3 weeks post initiation of the treatment. Upon 6 weeks
    completing the treatment, her vision has improved to 6/7.5 on both eyes with
    resolution of optic disc swelling and sub-retinal fluid. Early recognition and
    initiation of treatment in toxoplasma infection associated with juxtapapillary
    retinochoroiditis usually result in good visual prognosis.
    Matched MeSH terms: Tomography; Tomography, X-Ray Computed
  20. Karim MKA, Sabarudin A, Muhammad NA, Ng KH
    Radiol Phys Technol, 2019 Dec;12(4):374-381.
    PMID: 31468370 DOI: 10.1007/s12194-019-00532-8
    This study aimed to evaluate effective dose and size-specific dose estimate (SSDE) of computed tomography angiography (CTA) examination using an anthropomorphic phantom. We included three CTA examination protocols to evaluate the intra- and extra-cranial arteries, pulmonary artery (CTPA), and abdominal vessels. Patient SSDEs were measured retrospectively to estimate patient dose, relative to the bodyweight of the patient and volume CT dose index (CTDIvol). Our findings revealed that the highest dose was absorbed by the left lobe of the thyroid gland during intra-/extra-cranial CTA and CTPA, that is, 14.11 ± 0.24 mGy and 16.20 ± 3.95 mGy, respectively. However, the highest absorbed dose in abdominal/pelvic CTA was the gonads (8.98 ± 0.30 mGy), while other radiosensitive organs in intra- and extra-cranial CTA, CTPA, and abdominal/pelvic CTA did not demonstrate significant differences between organs/structures with p value 0.88, 0.11, and 0.54, respectively. The estimated effective dose in intra-/extra-cranial CTA was lower in patients (0.80 ± 0.60 mSv) than in the phantom (0.83 mSv), but it was the opposite for CTPA, with the effective dose being higher in patients (7.54 ± 3.09 mSv) than in the phantom (6.68 mSv). Similar to the effective dose, only CTPA SSDEs were significantly higher in men than in women (19.74 ± 4.79 mGy versus 7.9 mGy). Effective dose and SSDE are clinically relevant parameters that can help estimate a more accurate patient dose based on a patient's size.
    Matched MeSH terms: Computed Tomography Angiography/instrumentation*
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