What is the generation of CT Scan?

By

 CT stands for "computed tomography," and the technology has evolved through different generations. 

Computed Tomography (CT) has undergone several generations of advancements since its inception in the 1970s. The first-generation CT scanners, introduced by Sir Godfrey Hounsfield and Dr. Allan Cormack, utilized a single detector and a rotating X-ray tube. Although revolutionary at the time, these scanners were relatively slow and provided limited image resolution compared to contemporary technology.


As technology progressed, so did CT scanners. Second-generation scanners introduced multiple detectors, improving imaging speed and quality. Third-generation scanners, with their continuous rotation capabilities, further enhanced image acquisition. The evolution continued with the introduction of helical or spiral scanning in fourth-generation CT, allowing for three-dimensional reconstructions and faster imaging.


Beyond the fourth generation, subsequent advancements focused on dose reduction, improved spatial resolution, and faster data acquisition. Multi-slice CT scanners, a significant development, allowed for the simultaneous acquisition of multiple slices, reducing scan times and enhancing diagnostic capabilities. Additionally, iterative reconstruction techniques were introduced to improve image quality while minimizing radiation exposure.


In recent years, advancements in CT technology have also included dual-energy CT, spectral imaging, and artificial intelligence applications. These innovations aim to provide more detailed information about tissue composition and function, ultimately improving diagnostic accuracy and expanding the clinical utility of CT scans. Overall, the generations of CT scanners reflect a remarkable journey of technological innovation, continually pushing the boundaries of medical imaging for better patient care and diagnosis.

Comments

Post a Comment

Comments for this blog are held for moderation before they are published to the blog.

English grammar bank

10 types of noun | Noun Case

By
Image
10 TYPES OF NOUN: As we have already read that noun is a name of person .place. thing. Idea and Animal. It is used everywhere in writing and speaking. Now we will discuss its types with diffinition and examples: A noun has two general groups and different types:  =>>> Let's discuss the 10 types of noun:  《Major types or groups》   *Proper noun *Common noun   *proper noun:  A proper noun is a specific name for a particular person, place, or thing. Proper nouns are always capitalized in English, no matter where they fall in a sentence. example: ( Friday , Pakistan , London, Quaid-e-Azam ).  *Common noun:  A common noun is a name of general type or non specific person, place , animal or things. Example; ( night , chair , girl, planet )                  《More types of noun》   *Concrete noun   •Collective noun   *Gender noun   *Abstract noun...
Read more

2 KINDS OF ENGLISH | ALPHABETS

By
Image
  There are twenty six alphabets in english. these alphabets are devided into two catagories consonant and wovels.  wovels are five ( A. E . I . O. U ) and remaining twenty one alphabets are called consonant .  the wovels need to break the sounds that consonant make. so every word has to have a wovel not every word has to have a consonant.  https://www.smartlearningguru.com/2022/01/3-kinds-of-tense-4-types-of-present-tense.html There are strings of consonant that are sometimes written like full words. e.g " hmm" these are just sounds rather than actual words .  wovel is a sound which is made by mouth aur throat without closing it at any point. on the other hand consonant is a sound that made with the air stopping one or more during the vocalization that means that at some point sound is stopped by teeth. lips. and toung.  sometimes the consonant letter "y" produce short "i" sound like "myth". in this word the letter "y" made a sound wit...
Read more

A star cluster that looks like a Christmas tree.

By
Image
  A star cluster that looks like a Christmas tree. Hundreds of light-years away, a star cluster has been spotted that looks exactly like a Christmas tree. According to the American media, on the occasion of the Christian festival of Christmas, NASA has released an image of the green 'young' star cluster NGC 2264, also known as the Christmas Tree Cluster. According to media reports, this star cluster, which looks like a Christmas tree, is 2500 light years away. This image of the star cluster was taken by NASA's Chandra X-ray Observatory.
Read more

4 types of past tense | past tense

By
Image
        PAST TENSE Past tense . 4 types of past tense   [A past tense is used to indicate an action completed in the past ] Past tense has four types.   ///Four types of past tense///          (1) Past indefinite  tense (2) Past continuous tense (3) Past perfect tense (4) Past perfect continuous tense   ///// Past indefinite tense /////   [ This tense informs us about the happenings. When happened in the past ]  { Types of sentence } ∆ past indefinite  ( positive )  ∆ Past indefinite  (negative ) ∆ past indefinite  ( interrogative )  ∆ past indefinite  ( negative interrogative )  /// Rules/// •  in this tense we use 2nd form of the verb. •  for negative sentence we use  ( did not) and use Ist form of the verb.  •  for interrogative sentence we use did at the start of the sentence and then use Ist form of the verb. •   for negative interrogativ...
Read more

8 Parts of speech | Examples | definitions.

By
Image
      Parts of speech in English How many parts of speech are there in English? There are Eight parts of speech in english language. What does parts of speech mean? Durring the descution we speak different types of words . Every word is a part of speech. The term (part of speech ) refers to the role a word plays in a sentence.  What is a noun? 1. Noun:                         A noun is a word that names person, place, concept, or object. Basically, anything that names a “thing” is a noun (book. Bat. John. Tree). Nouns fall into two categories: (Common nouns and proper nouns). 2 types of noun:  Common nouns are general names for things.  Proper nouns are specific names for individual things.  10 Types of noun What is pronoun?  2. Pronouns:  Pronouns are the words we use intead for a noun. when the reader or listener knows which specific noun you are referring to. Example.“john...
Read more

3 Tenses in English | 4 types of Present tense

By
Image
///Tenses in English/// [ The word tense comes from the Latin word  tempus , its mean time ]  The tense of a verb shows the time of an action or event:  There are three tenses in English and each tense has four types:  There are following  three tenses in English:  •  present  •  past  •  future    ///Tenses recognition/// (1)  Present tense:  In this tense A verb that refers to present time is said to be in the present tense.  e.g:   ( I go ,   he writes ,  i love )  •  Past tense:  A verb that refers to past time is said to be in the Past tense:  e.g:    ( I went ,  he wrote , i loved )  •  Future tense:  In future  tense A verb that refers to future time is said to be in the Future tense:  e.g:    ( i shall go ,  he will write , I shall love )  ///Types of tenses/// [TYPES OF PRESENT TENSE] •  Pre...
Read more