[MRT of the eye: the normal anatomy and detection of the smallest lesions with a high-resolution surface coil].
OBJECTIVE
A new, high-resolution surface coil for MRI of the eye was evaluated with regard to practicability, image quality and sensitivity for small lesions.


METHODS
48 patients in whom a space-occupying lesion of the eye or orbit was suspected were examined (1.5 T tomograph, 5 cm surface coil, T1- and T2-weighted spin-echo sequences, the former before and after i.v. gadolinium DTPA).


RESULTS
45/48 patients tolerated MR with the high-resolution surface coil. No adverse effects were experienced by the patients. In 11/48 patients a space occupying lesion of the eye was detected (melanoma, 5; metastases, 2; haemorrhage, 1; malformation, hamartoma and scarring after melanoma, one each). The smallest detectable lesion had a thickness of < 1 mm.


CONCLUSIONS
First experiences with the high-resolution surface coil indicate that this device is suited for detection of very small lesions of the eye.
Hosten
N
N
Strahlenklinik und Poliklinik, Klinikum Rudolf Virchow, Freie Universität Berlin.
Lemke
A
A
Sander
B
B
Requardt
H
H
Wassmuth
R
R
Mäurer
J
J
Anders
N
N
Felix
R
R
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016477:Artifacts; D002648:Child; D002675:Child, Preschool; D003287:Contrast Media; D005123:Eye / Q000033:anatomy & histology* / Q000473:pathology*; D005134:Eye Neoplasms / Q000175:diagnosis; D005260:Female; D005682:Gadolinium; D019786:Gadolinium DTPA; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000295:instrumentation* / Q000379:methods; D008297:Male; D008875:Middle Aged; D009918:Orbital Neoplasms / Q000175:diagnosis; D009942:Organometallic Compounds; D004369:Pentetic Acid / Q000031:analogs & derivatives; D012016:Reference Values; D012680:Sensitivity and Specificity
D003287:Contrast Media; D009942:Organometallic Compounds; D004369:Pentetic Acid; D005682:Gadolinium; D019786:Gadolinium DTPA
MRT des Auges: Normalanatomie und Nachweis kleinster Läsionen mit einer hochauflösenden Oberflächenspule.