10 exam-style questions with answers and explanations, straight from our 1,030-question bank. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
These 10 free CLLRT questions are organized by exam domain, so you can see how each part of the Limited Licensed Radiologic Technologist blueprint is tested. Reveal the answer and explanation under each question.
Through a qualified medical interpreter, a technologist explains when to breathe in and hold the breath for a chest radiograph. The patient smiles and nods. The most useful check of the patient's understanding is to:
Correct answer: A - Ask the patient to describe and demonstrate the breathing sequence.
An AP pelvis exposure lasts longer than expected when automatic exposure control (AEC) is used. The only selected sensing cell lies beneath a metallic hip prosthesis. Which mechanism explains the prolonged exposure?
Correct answer: C - The prosthesis attenuates radiation over the cell, delaying automatic exposure termination.
A patient with a tremor cannot remain still for a long extremity exposure. Two techniques within the tube's ratings use equal kVp and mAs: a small focal spot with a longer exposure, or a large focal spot with a shorter exposure. At unchanged geometry, what trade-off accompanies selection of the shorter exposure?
Correct answer: C - Less motion blur, but potentially more geometric unsharpness
A satisfactory manual exposure uses 4.0 mAs at a source-to-image distance of 100 cm. The tube is moved to 150 cm for the next exposure. With kVp, patient thickness, detector, and other exposure conditions unchanged, what mAs will maintain approximately the same exposure at the image receptor?
Correct answer: D - 9.0 mAs
An incident x-ray photon ejects an electron from an atom and continues in a different direction with less energy. Identify the interaction that has occurred.
Correct answer: D - Compton scattering
A small child is positioned for a chest radiograph, but the thorax does not fully cover any available automatic exposure control (AEC) sensing cell. How should exposure be controlled?
Correct answer: D - Use a validated manual technique based on patient size.
After a fall, an older patient has a shortened, painful leg and a suspected proximal femur fracture. An AP hip image has been obtained without forcing limb movement. With suitable equipment available, how should the ordered lateral view be obtained?
Correct answer: A - Support the injured limb in its existing position and use a horizontal beam.
A patient with confirmed meningococcal meningitis began effective antibiotic therapy 8 hours ago. A technologist is taking a portable chest radiograph in the patient's room. Which CDC transmission-based precaution category remains indicated?
Correct answer: B - Droplet Precautions, with a procedure mask on entry
During an adult patient's current Glasgow Coma Scale assessment, the eyes open to a spoken request and the patient squeezes and releases the examiner's hand on command. An endotracheal tube prevents speech. Before intubation, the patient had coherent but confused conversation. Which entry accurately records the current assessment?
Correct answer: A - E3, V not testable, M6; report without a total.
Hip DXA in a 63-year-old postmenopausal woman produces a femoral-neck T-score of -2.7 and a total-hip T-score of -1.8. Both regions are technically valid. Which result governs the hip's densitometric classification under ISCD adult criteria?
Correct answer: B - The femoral-neck result: osteoporosis
The CLLRT exam also covers these domains. Drill them in the full free practice test:
The full bank has 1,020 more CLLRT questions with explanations.
Continue in the free practice test →
View plans