Original Articles

Multislice Spiral Computed Tomography in Cardiac Imaging

C Hong, C Becker, R Bruening, MF Reiser

Hong Kong J Radiol 2001;4:252-8

Objective: Multislice computed tomography is an emerging technology with the potential for non-invasive coronary investigation. The aim of this study was to evaluate the feasibility and limitations of multislice computed tomography in the detection of coronary artery disease.

Patients and Methods:

Comparison of Spot Digital and Conventional Mammography in the Evaluation of Microcalcifications

KKT Pak, JLF Chiu, CS Kwok, SC Wong, SY Yiu, SCH Chan

Hong Kong J Radiol 2003;6:195-200

Objective: To compare the diagnostic accuracy of spot digital and conventional screen-film mammography and the influence of clinical data on the characterisation of microcalcifications.

Patients and Methods: Twenty nine patients with 30 groups of microcalcifications were studied. Two radiologists assessed

Quantitative Analysis of Artifacts Created by Metallic Orthopaedic Implants

SK Yu, WL Poon, KF Lai, MK Yuen

Hong Kong J Radiol 2003;6:191-4

Objective: To evaluate the magnitude of artifacts created by different materials commonly used in orthopaedic implants and their variation with the distance from the implants.

Patients and Methods: Metallic orthopaedic implants made of 3 different types of materials (stainless steel,

Scan Mode Performance of Dual Energy X-ray Absorptiometry Bone Densitometer

SK Yu, KM Ma, SK Cheung

Hong Kong J Radiol 2003;6:187-90

Objective: A commercially available dual energy X-ray absorptiometry scanner normally provides more than 1 scan mode. The differences between scan modes affect scan time, received radiation dose, and quality of the scan image. A phantom study was performed

Radiotherapy for Optic Nerve Sheath Meningiomas

WM Mendenhall, RJ Amdur, CG Morris, WA Friedman

Hong Kong J Radiol 2003;6:183-6

Objective: To determine the outcome after radiotherapy for optic nerve sheath meningiomas.

Patients and Methods: Six patients were treated with conventional (1 patient) or stereotactic (5 patients) radiotherapy and were followed up from 3.1 to 9.9 years (mean, 6.2 years).

Correlation of Clinical Presentation, Radiography, and Magnetic Resonance Imaging for Low Back Pain—a Preliminary Survey

PY Yong, NAA Alias, IL Shuaib

Hong Kong J Radiol 2003;6:144-51

Purpose: To determine the correlation between clinical presentation, plain radiographic signs, and magnetic resonance imaging of the lumbosacral spine for patients with low back pain.

Patients and Methods: Fifty seven patients were included in this study and their clinical presentation,

Morbidity and Mortality of Invasive Procedures Performed at Caritas Medical Centre

KH Pay, YW Lee, L Ho, CT Wong, H Huang

Hong Kong J Radiol 2003;6:137-43

Objective: Since more invasive procedures are being performed in radiology departments, this study was performed to ascertain the mortality and morbidity rate of these procedures as part of continuous quality improvement.

Patients and Methods: Five procedure categories of biopsy (lung,

Bolus Versus Continuous Infusion of Fluorouracil Plus Radiotherapy for Preoperative Treatment of Rectal Cancer

JS Gilroy, RA Zlotecki, WM Mendenhall, CG Morris, SR Schell, WR Rout,RJ Desnoyers, EM Copeland III, SN Hochwald

Hong Kong J Radiol 2003;6:132-6

Objective: To evaluate preoperative bolus versus continuous infusion chemoradiation.

Patients and Methods: Sixty eight patients received either bolus fluorouracil or continuous infusion fluorouracil combined with radiotherapy.

Results: The pathologic stages for bolus fluorouracil, continuous infusion fluorouracil, and overall were pT0,