{'fraction_non_alphanumeric': 0.02218430034129693, 'fraction_numerical': 0.008532423208191127, 'mean_word_length': 5.173684210526316, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
MRI in the diagnosis of knee injuries.

Trauma to the knee may result in injury to the menisci, cartilage, ligaments or bone. Physical examination of the painful knee in the acute phase may be difficult and frequently imaging studies are required to aid in the assessment of these injuries. Plain radiography is the most readily available and least expensive imaging modality but it lacks sensitivity for the detection of meniscus, cartilage, bone marrow and ligamentous injuries. MR imaging is now accepted as the modality of choice for the diagnosis of internal knee derangements, and in most centers in the U.S. it has replaced arthrography and diagnostic arthroscopy" 22. MR has been shown to be particularly useful in assessing meniscal abnormalities,3'4"14'21'26 however its role in the evaluation of cartilage and ligament injuries is still evolving. MR imaging does not utilize ionizing radiation and therefore it is entirely safe; it is also noninvasive, painless, and allows acquisition of images in multiple planes without repositioning the patient. In addition, MR provides excellent spatial and contrast resolution of both intraand extra-articular structures.