radiopaque

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Related to radio-opaque: radiolucent, radiopaque, radiopacity

radiopaque

 
obstructing the passage of radiant energy, such as x-rays, the representative areas appearing light or white on the exposed film.

ra·di·o·paque

(rā'dē-ō-pāk'),
Exhibiting relative opacity to, or impenetrability by, x-rays or any other form of radiation. Compare: radiolucent.
Synonym(s): radiodense
[radio- + Fr. opaque fr. L. opacus, shady]

radiopaque

(rā′dē-ō-pāk′)
adj.
Not allowing the passage of x-rays or other radiation.

ra′di·o·pac′i·ty (-ō-păs′ĭ-tē) n.

radiopaque

[-pāk′]
Etymology: L, radiare + opacus, obscure
not permitting the passage of x-rays or other radiant energy. See also radioactive element, radioactivity. radiopacity, n.

radiopaque

adjective Referring to a material or tissue that blocks passage of X-rays, and has a bone or near-bone density; radiopaque structures are white or nearly white on conventional X-rays.

radiopaque

adjective Referring to a material or tissue that blocks passage of x-rays, and has a bone or near bone density; radiopaque structures are white or near white on conventional x-rays. Cf Radiolucent.

ra·di·o·paque

(rā'dē-ō-pāk')
Exhibiting relative opacity to, or impenetrability by, x-rays or any other form of radiation.
Compare: radiolucent
Synonym(s): radiodense.
[radio- + Fr. opaque fr. L. opacus, shady]

radiopaque

Offering major resistance to the passage of X-rays. Radiopaque substances, such as barium sulphate and iodine-containing liquids, are commonly used to outline hollow structures, especially in the intestinal canal and the urinary system. See also BARIUM MEAL and intravenous or retrograde UROGRAPHY.

radiopaque

relatively impermeable to X-rays

ra·di·o·paque

(rā'dē-ō-pāk')
Exhibiting relative opacity to, or impenetrability by, x-rays or any other form of radiation.
Compare: radiolucent
[radio- + Fr. opaque fr. L. opacus, shady]

radiopaque (rā´dēōpāk´),

adj permitting the passage of radiant energy, but only with considerable or extreme attenuation of the radiation by absorption. The image of radiopaque materials on a radiograph ranges from light gray to total white or clarity on the film. See also medium, radiopaque.

radiopaque

not permitting the passage of x-rays, such areas appearing light in color on the x-ray film.
References in periodicals archive ?
In the present case, the presence of a radio-opaque shadow that kept on changing its position posed a diagnostic dilemma, which was solved only after laparotomy.
Computed tomography showed gallbladder opacification with very dense radio-opaque material within the gallbladder lumen.
Multi-detector CT (MDCT) should be reserved as an adjunct modality as it increases the sensitivity of identifying radio-opaque markers.
The medical radiologist discussed the imaging findings with the patient and offered the diagnosis of leukemia as the explanation for the radio-opaque lines in the noted vertebral bodies.
Osteopoikilosis can be diagnosed using a plain radiograph through the identification of multiple, variably shaped and sized radio-opaque spots clustered around joints and scattered throughout the skeleton.
Prior to the reflexology interventions, participants ingested three distinctive sets of 20 radio-opaque markers on three consecutive days.
Methods: The C3-C6 segments of 18 porcine cervical spines were prepared, with a radio-opaque mixture injected into the C3-C4 nucleus of the intervertebral disc of each segment.
A radiograph of the pelvis showed a rounded well-defined lytic lesion in the sacrum, adjacent to the left sacroiliac joint in addition to the radio-opaque calculus in the distal ureter (Figure 1).
Administration of radio-opaque contrast medium is recommended.
A radio-opaque polymer would allow routine X-ray imaging and enable its life as an implant to be followed without invasive surgery.
Another modification of this method may also be used under fluoroscopy by filling the balloon of the catheter by radio-opaque liquid for guidewires located in all levels of the venous system.
A 200 mm long (12F) radio-opaque polyurethane triple lumen catheter (Gamcath) was introduced via the right femoral vein at the second attempt.