²é¿´: 394  |  »Ø¸´: 0

ÀËÂþµÄ¿Ý

гæ (³õÈëÎÄ̳)

[ÇóÖú] ¹ØÓÚMATLAB±à³ÌµÄСÎÊÌ⣬Çó½â´ð

ǰ¶Îʱ¼ä¸Õ¿ªÑ§£¬ÀÏʦÈÃÎÒ¼òµ¥±àд¸öС³ÌÐò£¬¿ÉÊÇÎÒMATLABʵÔÚÊÇÓй»Àõģ¬¸ã²»³öÀ´£¬¼±ËÀÁË£¬Ï£ÍûÓдóÉñËæ±ã¶¯ÏÂÊó±ê°ïÎÒһϡ£
      ÏÂÃæÊÇÀÏʦ¸øÎÒµÄС×÷ҵָʾ£º
The file (P02560.7) is the raw data acquired on a 3T scanner, with single-slice. It has a header of 61464 at the front. After the header, it contains the k-space data of a 256x256 single image. The raw data is in complex short integer.
1) Please read the P02560.7 file using fopen, fseek, fread, fclose functions in MATLAB. Using imshow and abs function to show the k-space data.
2)You can use reshape, zeros and ifft2, ifftshift functions to reconstruct the brain image.Using imshow ,abs and angle functions to show the magnitude and phase of the reconstructed image.
3) Please use help documents to find the details of these functions.

Õâ¸öP02560.7ÊǸöK¿Õ¼äÊý¾ÝÎļþ£¬ÎÒûÓÐÉÏ´«£¬Ö»ÏëÖªµÀ¸ÃÔõô±àд´úÂ룬ÓкöàÖ¸Áî¶¼²»Ê죬ÏÂÃæÊÇÒ»¸öʦÐÖ°ïÎÒËæ±ãдµÄ£¬£¬ËäȻͼÏñ³öÀ´ÁË£¬ºÃÏñ»¹ÊDz»Ì«¶Ô£¬ÇóÍòÄܵÄjrs´î¾È£ºfid=fopen('P02560.7','r+');
status=fseek(fid,61465,'bof');
A=fread(fid,[256,256],'int16');
A=double(A);
K=A/(max(max((abs(A)))));
figure,imshow(abs(K),[]);
data = 1/sqrt(length(K())*ifftshift(ifft2(fftshift(K)));
figure,imshow(abs(data),[]);
IG=ifftshift(fft2(ifftshift(data)));
figure,imshow(abs(IG),[]);


˳±ãÎÊÏ£¬¼ÓÏ»®ÏßµÄÕâ3¾äΪʲôÕâÑùÓã¿
ps£ºhttp://pan.baidu.com/s/1mg5LxVi£¬£¬ÕâÊÇP02560.7 ÎļþµÄÁ´½Ó¡£
»Ø¸´´ËÂ¥
Ç鳡ÀË×ÓÅ®¼û³î
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÖÇÄÜ»úÆ÷ÈË

Robot (super robot)

ÎÒÃǶ¼°®Ð¡Ä¾³æ

ÕÒµ½Ò»Ð©Ïà¹ØµÄ¾«»ªÌû×Ó£¬Ï£ÍûÓÐÓÃŶ~

¿ÆÑдÓСľ³æ¿ªÊ¼£¬ÈËÈËΪÎÒ£¬ÎÒΪÈËÈË
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ ÀËÂþµÄ¿Ý µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[»ù½ðÉêÇë] ¹ú×ÔÈ»ÃæÉϸ´ÅÌ~»¶Ó­ÌÖÂÛ +6 ÇçÌì¼ÓÓÍ 2026-08-26 7/350 2026-08-27 07:30 by pinghe007
[˶²©¼ÒÔ°] ÊÛSCIÒ»ÇøT0PÎÄÕ£¬ÎÒ:8.O.55.1.O.54,¿ÆÄ¿ÆëÈ«,¿É+¼± +3 LIbGuocjEEYw 2026-08-26 4/200 2026-08-27 02:01 by Ie9AyIAvGbvs
[»ù½ðÉêÇë] »ù½ð²»ÖУ¬¹²Ãã +5 eulota 2026-08-26 5/250 2026-08-26 23:33 by young90
[»ù½ðÉêÇë] ¿´°åÉÏÕâô¶àÖеģ¬ÓеãÏñ50ÈËȺÀï49¸öÈ˶¼ÊÇÆ­×ÓµÄÄÇÖָоõ¡­¡­ +3 a089 2026-08-26 3/150 2026-08-26 23:21 by young90
[»ù½ðÉêÇë] ÎÒ²»Àí½â£¡ +15 Edward_pc 2026-08-26 23/1150 2026-08-26 20:34 by zzuzxg
[»ù½ðÉêÇë] 2026ÄêµÄ¹ú¼ÒÉç¿Æ»ù½ðÏîĿͨѶÆÀÉóµÄйæÔòÓëж¯Ïò¡¢ÐÂÌôÕ½ +7 process2012 2026-08-23 10/500 2026-08-26 19:23 by hmhminy
[»ù½ðÉêÇë] Ôõô²é°¡ +5 huang1991js 2026-08-26 5/250 2026-08-26 16:09 by Equinoxhua
[»ù½ðÉêÇë] ³öÀ´ÁË +9 trojank 2026-08-26 9/450 2026-08-26 14:25 by ±¦±´³æ×Ó
[»ù½ðÉêÇë] ÄÄλ¸ßÈËÖÐÁË£¬°Ñ²éѯµ½µÄ½ØÍ¼Ìù³öÀ´ÈÃÎÒ¿´¿´£¬ÈÃÎÒ³¤³¤¼ûʶ +4 yuleib84 2026-08-26 5/250 2026-08-26 13:40 by yuleib84
[»ù½ðÉêÇë] Ϊʲô¹ú×ÔÈ»²»ÄÜÖ±½Ó¹«²¼ +4 bjdxyxy 2026-08-26 4/200 2026-08-26 13:12 by qingmu1201
[»ù½ðÉêÇë] ¿ÆÑй¶ùÌ«ÄÑÁË +21 ÎÒ4´ó°×²Ë 2026-08-20 22/1100 2026-08-26 11:29 by nlgza
[»ù½ðÉêÇë] ÏîÄ¿ÐÅÏ¢ºÍ¾­·ÑÐÅÏ¢ÔÚϵͳÀï¶¼¿ÉÒÔ¿´µ½ÁË +6 wittyboy 2026-08-26 14/700 2026-08-26 10:55 by wittyboy
[»ù½ðÉêÇë] Ôõô¿´Çà»ùÖÐÁËûÓа¡ +4 Ò¶¾Å΢ 2026-08-26 4/200 2026-08-26 10:52 by xiacongxu
[Ö°³¡ÈËÉú] ѧÉúײ¼û¸¨µ¼Ô±ËÍÍâÂô£¬µÚ¶þÌìÈ«°à¶¼³ÁĬÁË +3 ¾¨ÓãÈÚ½ð_Õã½­_É 2026-08-22 3/150 2026-08-26 09:01 by zzuzxg
[»ù½ðÉêÇë] ¹úºÏÏÖÔڲ鲻µ½ÁËÂ𣿠+10 chengyan1220 2026-08-24 20/1000 2026-08-26 08:57 by peasantsprig
[»ù½ðÉêÇë] Å£À´£¡Ã×À´£¡ÃæÀ´£¡ +8 beefly 2026-08-26 8/400 2026-08-26 08:37 by xuzhipiao
[»ù½ðÉêÇë] ûÓÐÈκÎÏûÏ¢-ÊDz»ÊǾÍÁ¹ÁË +9 ͼÀ²Í¼À² 2026-08-24 10/500 2026-08-25 11:59 by ÄϺ£Ð¡¸ç
[½Ìʦ֮¼Ò] µ¼Ê¦Í²ۣºÎÒÔõô̯ÉÏÁËÕâô¸ö¼«Æ·Ñо¿Éú£¡ +3 ËÕ¶«ÆÂ¶þÊÀ 2026-08-23 3/150 2026-08-25 10:35 by shisan1313
[½Ìʦ֮¼Ò] Ìø²ÛºóÔÚÑÐÏîÄ¿Ôõô°ì£¿ +5 ¼òµ¥»¯xn 2026-08-22 10/500 2026-08-23 12:38 by ¼òµ¥»¯xn
[»ù½ðÉêÇë] »ù½ð°¡»ù½ð +4 longfie172 2026-08-20 4/200 2026-08-21 08:58 by mark mao
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û