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What is CT Scanning of the Head?
Computed tomography, more commonly known as a CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces multiple images or pictures of the inside of the body.
The cross-sectional images generated during a CT scan can be reformatted in multiple planes, and can even generate three-dimensional images. These images can be viewed on a computer monitor, printed on film or by a 3D printer, or transferred to a CD or DVD.
CT images of internal organs, bones, soft tissue and blood vessels provide greater detail than traditional x-rays, particularly of soft tissues and blood vessels.
Computed tomography (CT) scanning of the head uses a series of x-rays of the head taken from many different directions; the resulting data is transformed into a series of cross sections of the brain using a computer program.
The CT head scan is one of the most common imaging studies that you can be faced with and the most frequently requested by A&E. This app will cover some of the underlying principles of CT head studies, and discuss a method for their interpretation.
Underlying principles and terminology
Computed tomography (CT) scanning involves the use of x-rays to take cross-sectional images of the body. This is possible as different tissues interact with X-rays in different ways. Some tissues will allow the passage of these X-rays without influencing it much, whilst other tissues will exert a more significant effect. The extent to which a material can be penetrated by an x-ray beam is described in terms of an attenuation coefficient which assesses how much a beam is weakened by passing through a voxel of tissue (voxel = volumetric pixel).
Apa itu CT Scanning of the Head?
Computed tomography, lebih dikenal sebagai CT atau CAT scan, adalah tes medis diagnostik yang, seperti sinar-x tradisional, menghasilkan banyak gambar atau gambar bagian dalam tubuh.
Gambar cross-sectional yang dihasilkan selama CT scan dapat diformat ulang dalam beberapa bidang, dan bahkan dapat menghasilkan gambar tiga dimensi. Gambar-gambar ini dapat dilihat pada monitor komputer, dicetak pada film atau oleh printer 3D, atau ditransfer ke CD atau DVD.
Gambar CT organ internal, tulang, jaringan lunak dan pembuluh darah memberikan detail yang lebih besar daripada x-ray tradisional, terutama jaringan lunak dan pembuluh darah.
Pemindaian computed tomography (CT) kepala menggunakan serangkaian sinar-x kepala yang diambil dari berbagai arah; data yang dihasilkan ditransformasikan menjadi serangkaian bagian lintas otak menggunakan program komputer.
Pemindaian kepala CT adalah salah satu studi pencitraan paling umum yang dapat Anda hadapi dan yang paling sering diminta oleh A&E. Aplikasi ini akan mencakup beberapa prinsip yang mendasari studi kepala CT, dan mendiskusikan metode untuk interpretasi mereka.
Prinsip dan terminologi yang mendasarinya
Pemindaian computed tomography (CT) melibatkan penggunaan sinar-x untuk mengambil gambar penampang tubuh. Ini dimungkinkan karena jaringan yang berbeda berinteraksi dengan sinar-X dengan cara yang berbeda. Beberapa jaringan akan memungkinkan lewatnya sinar-X ini tanpa banyak memengaruhi, sementara jaringan lain akan memberikan efek yang lebih signifikan. Sejauh mana suatu bahan dapat ditembus oleh sinar x-ray dijelaskan dalam hal koefisien atenuasi yang menilai seberapa banyak balok melemah dengan melewati voxel jaringan (voxel = volumetric pixel).
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