TAISHAN MEDICAL UNIVERSITY School of Radiolagy Examination Paper for International students (SET B) 6 Semester Final Exams,September Session 2009 Da0n Full Marks-70 Pass marks-42 Attempt all questions 1.What are the types of ultrasound transducer?How do you choose a propertransducer when different parts of a patient are examined The types of ultrasound transducer include linear array transducer.sector transducer,curved array transducer and special transducers The type of transducer selected for a particular examination depends upon several factors: The type of examination: The echocardiographic examination is performed with a sector transducer(3.5MHz).Obstetric and gynecologic scans are usually performed with a curved or linear array transducer(3.5MHz). The size of the patient ·For adults:3.5MHz, ●For children:10MHz Special transducers have been produced to help view specific areas 2.(a)Describe the imaging features of malignant ulcer. >Ulcerative type >"Half a month"syndrome Intracavitary Ulcer >Circling agger >Fissure sign digital impression >rigid wall >Crude borderline (b)Describe the imaging features of barium examination of esophageal carcinoma. Hard barium flow Esophageal strictures ·Filling defects Niche sign Dilatation Taishan medical university School of Radiology Examination Paper for International students (SET B) 6 th Semester Final Exams, September Session 2009 Time– 2. 30 hours Full Marks-70 Date– 12th January, 2010 Pass marks– 42 Attempt all questions 1. What are the types of ultrasound transducer? How do you choose a proper transducer when different parts of a patient are examined ? The types of ultrasound transducer include linear array transducer, sector transducer ,curved array transducer and special transducers. The type of transducer selected for a particular examination depends upon several factors: ⚫ The type of examination: The echocardiographic examination is performed with a sector transducer(3.5MHz). Obstetric and gynecologic scans are usually performed with a curved or linear array transducer(3.5MHz). ⚫ The size of the patient ⚫ For adults : 3.5MHz, ⚫ For children :10MHz Special transducers have been produced to help view specific areas. 2. (a) Describe the imaging features of malignant ulcer. ➢ Ulcerative type ➢ “Half a month ” syndrome ➢ Intracavitary Ulcer ➢ Circling agger ➢ Fissure sign ➢ digital impression ➢ rigid wall ➢ Crude borderline (b) Describe the imaging features of barium examination of esophageal carcinoma. • Hard barium flow • Esophageal strictures • Filling defects • Niche sign Dilatation