MyMedR

Biology of the Malaysian strain of Plasmodium juxtanucleare Versiani and Gomes, 1941. 3. Life cycle of the erythrocytic parasite in the avian host

Bennett GF, Warren M

J Parasitol, 1966 Aug;52(4):653-9.

PMID: 5969103

Biology of the Malaysian strain of Plasmodium juxtanucleare Versiani and Gomes, 1941. 1. Description of the stages in the vertebrate host

Bennett GF, Warren M

J Parasitol, 1966 Jun;52(3):565-9.

PMID: 5942532

Fulltext Increasing iterative reconstruction strength at low tube voltage in coronary CT angiography protocols using 3D-printed and Catphan® 500 phantoms

Abdullah KA, McEntee MF, Reed WM, Kench PL

J Appl Clin Med Phys, 2020 Sep;21(9):209-214.

PMID: 32657493 DOI: 10.1002/acm2.12977

PURPOSE: The purpose of this study was to investigate the effect of increasing iterative reconstruction (IR) algorithm strength at different tube voltages in coronary computed tomography angiography (CCTA) protocols using a three-dimensional (3D)-printed and Catphan® 500 phantoms.

METHODS: A 3D-printed cardiac insert and Catphan 500 phantoms were scanned using CCTA protocols at 120 and 100 kVp tube voltages. All CT acquisitions were reconstructed using filtered back projection (FBP) and Adaptive Statistical Iterative Reconstruction (ASIR) algorithm at 40% and 60% strengths. Image quality characteristics such as image noise, signal-noise ratio (SNR), contrast-noise ratio (CNR), high spatial resolution, and low contrast resolution were analyzed.

RESULTS: There was no significant difference (P > 0.05) between 120 and 100 kVp measures for image noise for FBP vs ASIR 60% (16.6 ± 3.8 vs 16.7 ± 4.8), SNR of ASIR 40% vs ASIR 60% (27.3 ± 5.4 vs 26.4 ± 4.8), and CNR of FBP vs ASIR 40% (31.3 ± 3.9 vs 30.1 ± 4.3), respectively. Based on the Modulation Transfer Function (MTF) analysis, there was a minimal change of image quality for each tube voltage but increases when higher strengths of ASIR were used. The best measure of low contrast detectability was observed at ASIR 60% at 120 kVp.

CONCLUSIONS: Changing the IR strength has yielded different image quality noise characteristics. In this study, the use of 100 kVp and ASIR 60% yielded comparable image quality noise characteristics to the standard CCTA protocols using 120 kVp of ASIR 40%. A combination of 3D-printed and Catphan® 500 phantoms could be used to perform CT dose optimization protocols.

Biology of the Malaysian strain of Plasmodium juxtanucleare Versiani and Gomes, 1941. II. The sporogonic stages in Culex (Culex) sitiens Wiedmann

Bennett GF, Warren M, Cheong WH

J Parasitol, 1966 Aug;52(4):647-52.

PMID: 5969102

Biology of the simian malarias of southeast Asia. II. The susceptibility of some Malaysian mosquitoes to infection with five strains of Plasmodium cynomolgi

Bennett GF, Warren M, Cheong WH

J Parasitol, 1966 Aug;52(4):625-31.

PMID: 5969101

Plasmodium jefferyi sp. n. from Hylobates lar in Malaya

Warren M, Coatney GR, Skinner JC

J Parasitol, 1966 Feb;52(1):9-13.

PMID: 5910463

The known vectors of simian malaria in Malaya today

Cheong WH, Ben Omar AH, Warren M

Med J Malaya, 1966 Jun;20(4):327-9.

PMID: 4380826

Anopheles balabacensis balabacensis identified as vector of simian malaria in Malaysia

Cheong WH, Warren M, Omar AH, Mahadevan S

Science, 1965 Dec 03;150(3701):1314-5.

PMID: 5857000

The mosquito Anopheles balabacensis balabacensis has been identified as a natural vector of at least two species of simian malaria in the monsoon forests of the northern Malay States. This mosquito is also a serious vector of human malaria from Viet Nam to northern Malaya. This is the first report of a mosquito which transmits both human and simian malaria in nature.

MORPHOLOGY OF PLASMODIUM FIELDI IN DIFFERENT SPECIES OF THE GENUS MACACA

WARREN M, ALI K, BENNETT GF, SANDOSHAM AA

Med J Malaysia, 1964 Sep;19:31.

PMID: 14240058

Anopheles balabacensis balabacensis identified as a vector of monkey malaria in malaya

Cheong WH, Omar HB, Warren M, Mahadevan S

Med J Malaya, 1965 Sep;20(1):76.

PMID: 4221433

Anopheles leucosphyrus identified as a vector of monkey malaria in Malaya

Wharton RH, Eyles DE, Warren M, Moorhouse DE

Science, 1962 Sep 7;137(3532):758.

PMID: 14006429 DOI: 10.1126/science.137.3532.758

Anopheles leucosphyrus, an important vector of human malaria in Sarawak, Borneo, was shown to be infected with Plasmodium inui in Malaya by the inoculation of sporozoites into an uninfected rhesus monkey. The mosquito was caught while biting a man, thus demonstrating that it would be possible for a monkey infection to be transmitted to man in nature.

Plasmodium hylobati: a malaria parasite of the gibbon

Collins WE, Contacos PG, Garnham PC, Warren M, Skinner JC

J Parasitol, 1972 Feb;58(1):123-8.

PMID: 4335047

Fulltext Studies on the relationship between fluorescent antibody response and ecology of malaria in Malaysia

Collins WE, Warren M, Skinner JC, Fredericks HJ

Bull World Health Organ, 1968;39(3):451-63.

PMID: 4882987

The fluorescent antibody (FA) technique was used to detect the presence of malarial antibody in populations living in 3 different ecological areas of Malaysia. Serum samples were tested using Plasmodium falciparum, P. vivax, P. malariae and P. fieldi antigens. An area of hyperendemic malaria had a good correlation between the antibody responses and active parasitaemias. The percentage and intensity of responses increased with the age of the individuals. In an area of hypoendemic malaria, each of 17 sites had ecological conditions which would favour or discourage the transmission of malaria. The reasons for high FA responses in some villages and low responses in others were readily apparent. The effect of even limited control programmes on the malarial ecology could be measured by an examination of the antibody responses. An aboriginal population receiving suppressive drugs had FA responses indicating both past experience and the effect of the drug programme.

MALARIA IN PERLIS

SANDOSHAM AA, WHARTON RH, EYLES DE, WARREN M, CHEONG WH

Med J Malaysia, 1963 Sep;18:46-51.

PMID: 14064298

Plasmodium inui: serologic relationships of Asian isolates

Collins WE, Warren M, Skinner JC, Alling DW

Exp Parasitol, 1970 Jun;27(3):507-15.

PMID: 4986810

STUDIES TO DETERMINE THE VECTORS OF MONKEY MALARIA IN MALAYA

WHARTON RH, EYLES DE, WARREN M, CHEONG WH

Ann Trop Med Parasitol, 1964 Mar;58:56-77.

PMID: 14147666

THE SUCEPTIBILITY OF MALAYAN ANOPHELINES TO PLASMODIUM CYNOMOLGI BASTIANELLII

WARREN M, EYLES DE, WHARTON RH, KONG OY

Indian J Malariol, 1963 Mar;17:85-105.

PMID: 14274297

Cycles of jungle malaria in West Malaysia

Warren M, Cheong WH, Fredericks HK, Coatney GR

Am J Trop Med Hyg, 1970 May;19(3):383-93.

PMID: 4392806

Fulltext INVESTIGATIONS LEADING TO THE IDENTIFICATION OF MEMBERS OF THE ANOPHELES UMBROSUS GROUP AS THE PROBABLE VECTORS OF MOUSE DEER MALARIA

Wharton RH, Eyles DE, Warren M, Moorhouse DE, Sandosham AA

Bull World Health Organ, 1963;29:357-74.

PMID: 14058228

Although mosquitos of the Anopheles umbrosus group have long been recognized as important vectors of human malaria in Malaya, there have been doubts about the origin of some of the malaria infections found, especially in A. umbrosus and A. letifer. Investigations have accordingly been carried out in the Malayan swamp-forest, in conjunction with laboratory studies, into the nature of malaria infections in wild-caught mosquitos, the biting behaviour of anophelines and the presence of malaria infection in man and animals. The authors conclude from the results reported in this paper that A. umbrosus is a vector of mouse deer malaria and rarely, if ever, transmits primate malaria; that A. letifer transmits both human and mouse deer malaria; and that A. baezai and A. roperi are probably vectors of mouse deer malaria.

Fulltext Identification of Anopheles balabacensis introlatus as a vector of monkey malaria in Malaya

Eyles DE, Warren M, Guinn E, Wharton RH, Ramachandran CP

Bull World Health Organ, 1963;28(1):134-5.

PMID: 14166986

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